<!--
 * @Description: 
 * @Author: yyh
 * @Date: 2022-10-24 16:41:08
 * @LastEditors: yyh
 * @LastEditTime: 2022-11-11 18:52:00
-->
<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>权限管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    
    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 添加角色按钮区域 -->
        <el-row>
            <el-col>
                <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
            </el-col>
        </el-row>

        <!-- 角色列表区域 -->
        <el-table :data="rolelist">
            <!-- 展开列 -->
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                        <!-- 渲染一级权限 -->
                        <el-col :span="5">
                            <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                            <i class="el-icon-caret-right"></i>
                        </el-col>
                        <!-- 渲染二级和三级权限 -->
                        <el-col :span="19">
                            <!-- 通过for循环 嵌套渲染二级权限 -->
                            <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                                <el-col :span="6">
                                    <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                                    <i class="el-icon-caret-right"></i>
                                </el-col>
                                <el-col :span="18">
                                    <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row, item3.id)">{{item3.authName}}</el-tag>
                                </el-col>
                            </el-row>
                        </el-col>
                    </el-row>
                </template>
            </el-table-column>
            
            <el-table-column label="序号" type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRolesById(scope.row.id)">删除</el-button>
                    <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-card>

    <!-- 添加角色的对话框 -->
    <el-dialog
        title="添加角色"
        :visible.sync="addDialogVisible"
        width="50%" 
        @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addRolesForm" :rules="addRolesFormRules" ref="addRolesFormRef" label-width="80px" >
            <el-form-item label="角色名称" prop="roleName">
                <el-input v-model="addRolesForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
                <el-input v-model="addRolesForm.roleDesc"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addRoles">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改角色的对话框 -->
    <el-dialog
        title="修改角色"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <el-form ref="editRolesFormRef"
        :model="editRolesForm"
        :rules="editRolesFormRules"
        label-width="80px">
            <el-form-item label="角色名称" prop="roleName">
                <el-input v-model="editRolesForm.roleName"></el-input>
            </el-form-item>
            <el-form-item label="角色描述" prop="roleDesc">
                <el-input v-model="editRolesForm.roleDesc"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editRolesInfo">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 分配权限的对话框 -->
    <el-dialog
        title="分配权限"
        :visible.sync="setRightDialogVisible"
        width="50%" @close="setRightDialogClosed">
        <!-- 树形控件 -->
        <el-tree :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRightDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
        // 所有角色列表数据
        rolelist: [],
        // 控制分配权限对话框的显示与隐藏
        setRightDialogVisible: false,
        // 所有权限的数据
        rightslist: [],
        // 树形控件的属性绑定对象
        treeProps: {
            label: 'authName',
            children: 'children'
        },
        // 默认选中的id值数组
        defKeys: [],
        // 当前即将分配权限的id
        roleId: '',
        // 控制添加角色对话框的显示与隐藏
        addDialogVisible: false,
        // 添加角色的表单数据
        addRolesForm: {
            roleName: '',
            roleDesc: ''
        },
        // 添加角色表单的验证规则对象
        addRolesFormRules: {
            roleName: [
                { required: true, message: '请输入角色名称', trigger: 'blur' }
            ],
            roleDesc: [
                { required: true, message: '请输入角色描述', trigger: 'blur' }         
            ]
        },
        // 控制修改角色对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到的角色信息对象
        editRolesForm: {},
        // 修改角色表单的验证规则
        editRolesFormRules: {
            roleName: [
                { required: true, message: '请输入角色名称', trigger: 'blur' }
            ],
            roleDesc: [
                { required: true, message: '请输入角色描述', trigger: 'blur' }
            ],
        }
    };
  },
  computed: {},
  methods: {
    // 获取角色列表方法
    async getRolesList() {
        const {data: res} = await this.$http.get('roles')
        if(res.meta.status !== 200) {
            return this.$message.error('获取角色列表失败！')
        }
        this.rolelist = res.data
        // console.log(this.rolelist)
    },
    // 监听添加角色对话框的关闭事件
    addDialogClosed() {
        this.$refs.addRolesFormRef.resetFields()
    },
    // 点击按钮，添加新角色
    addRoles() {
        // 添加角色的预验证
        this.$refs.addRolesFormRef.validate(async valid => {
            if(!valid) return
            // 验证通过，可以发起添加角色的网络请求
            const { data:res } = await this.$http.post('roles', this.addRolesForm)
            if(res.meta.status !== 201) {
                this.$message.error('添加角色失败！')
            }
            this.$message.success('添加角色成功！')
            // 隐藏添加角色的对话框
            this.addDialogVisible = false
            // 重新获取角色列表数据
            this.getRolesList()
        })
    },
    // 展示编辑角色的对话框
    async showEditDialog(id) {
        const{ data:res } = await this.$http.get('roles/' + id)
        if(res.meta.status !== 200) return this.$message.error('查询角色信息失败！')
        this.editRolesForm = res.data
        // console.log(this.editRolesForm)
        this.editDialogVisible = true
    },
    // 监听修改角色对话框的关闭事件
    editDialogClosed() {
        this.$refs.editRolesFormRef.resetFields()
    },
    // 修改角色信息并提交
    editRolesInfo() {
        this.$refs.editRolesFormRef.validate(async valid => {
            if(!valid) return
            // 验证通过，可以发起修改角色的网络请求
            const {data:res} = await this.$http.put('roles/' + this.editRolesForm.roleId, { roleName: this.editRolesForm.roleName, roleDesc: this.editRolesForm.roleDesc })
            if(res.meta.status !== 200) {
                return this.$message.error('更新角色信息失败！')
            }
            this.editDialogVisible =false
            this.getRolesList()
            this.$message.success('更新角色信息成功！')
        })
    },
    // 根据id删除用户信息
    async removeRolesById(id) {
        // 弹框询问是否删除用户
        const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
    }).catch(err => err)
    // console.log(confirmResult)
    if(confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
    }
    const { data:res } = await this.$http.delete('roles/' + id)
    if(res.meta.status !== 200) {
        return this.$message.error('删除角色失败！')
    }
    this.$message.success('删除角色成功！')
    this.getRolesList()
    },
    // 根据id删除删除对应的tag标签权限
    async removeRightById(role, rightId) {
        // 弹框提示用户是否要删除
        const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        }).catch(err => err)

        if(confirmResult !== 'confirm') {
            return this.$message.info('取消了删除！')
        }
        // console.log('确认了删除！');
        const {data: res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status !== 200) {
            return this.$message.error('删除权限失败！')
        }
        // this.getRolesList()
        role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
        this.roleId = role.id
        // 获取所有权限的数据
        const {data: res} = await this.$http.get('rights/tree')
        if(res.meta.status !== 200) {
            return this.$message.error('获取权限数据失败！')
        }
        this.rightslist = res.data
        // console.log(this.rightslist)
        // 递归获取三级节点的id
        this.getLeafKeys(role, this.defKeys)
        this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下所有三级权限的id,并保存到defKeys 数组中
    getLeafKeys(node, arr) {
        // 如果当前node节点不包含children属性，则是三级节点
        if(!node.children) {
            return arr.push(node.id)
        }
        node.children.forEach(item => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
        this.defKeys = []
    },
    // 点击为角色分配角色
    async allotRights() {
        const keys = [...this.$refs.treeRef.getCheckedKeys(), ...this.$refs.treeRef.getHalfCheckedKeys()]
        // console.log(keys)
        const idStr = keys.join(',')

        const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`, {rids: idStr})
        if(res.meta.status !== 200) {
            return this.$message.error('分配权限失败！')
        }
        this.$message.success('分配权限成功！')
        this.getRolesList()
        this.setRightDialogVisible = false
    }
  },
  created() {
    this.getRolesList()
  },
  mounted() {}
};
</script>
<style lang="less" scoped>
.el-tag {
    margin: 7px;
}

.bdtop {
    border-top: 1px solid #eee;
}

.bdbottom {
    border-bottom: 1px solid #eee;

}

.vcenter {
    display: flex;
    align-items: center;
}
</style>